Investment in Unconsolidated Ventures (Summary of Results of Operations of Unconsolidated Ventures) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Schedule of Equity Method Investments [Line Items]
Company's share of income (Company's basis)	$ 242	$ 1,535
Unconsolidated Real Estate Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Revenue	34,385	40,889
Operating expenses	13,982	18,266
Interest expense, net	8,100	9,772
Depreciation and amortization	13,598	12,906
Net loss	(1,295)	(55)
Company's share of income (Company's basis)	$ 242	$ 1,535